EP 1250379 A1 20021023 - METHOD FOR PREPARING POLYORGANOSILOXANES BY POLYMERISATION CATALYSED BY A CATALYTIC SYSTEM BASED OF TRIFLIC ACID OR TRIFLIC ACID DERIVATIVES
Title (en)
METHOD FOR PREPARING POLYORGANOSILOXANES BY POLYMERISATION CATALYSED BY A CATALYTIC SYSTEM BASED OF TRIFLIC ACID OR TRIFLIC ACID DERIVATIVES
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POLYORGANOSILOXANE DURCH POLYMERISATION IN ANWESENHEIT VON TRIFLUORMETHANSULFONSÄURE ODER DERIVATE DAVON
Title (fr)
PROCEDE DE PREPARATION DE POLYORGANOSILOXANES PAR POLYMERISATION CATALYSEE PAR UN SYSTEME CATALYTIQUE A BASE D'ACIDE TRIFLIQUE OU DE DERIVES DE L'ACIDE TRIFLIQUE
Publication
Application
Priority
- FR 0003518 W 20001214
- FR 9916012 A 19991217
Abstract (en)
[origin: WO0144349A1] The invention concerns a method for preparing polyorganosiloxanes (POS) by (a) condensation polymerisation of monosilanes and/or acyclic siloxanes bearing reactive Si-OR units with R = H, or alkyl, or by (b) redistribution/ condensation polymerisation of siloxane compounds based on cyclosiloxanes and/or acyclic siloxanes capable of bearing reactive Si-OR units such as defined above, Si-H or Si-alkenyl units, in the presence of an acid catalyst. Said method is characterised in that it consists in using at least a catalyst of the following formula (I) (CmF2m+1SO2)nA wherein: m is an integer not less than 1; n is an integer equal to 1 or 2 and A represents OH, NH2 or NH with: (i) n = 1 and A = OH or (ii) n = 1 and A = NH2 or (iii) n = 2 and A = NH; provided that, when said catalyst corresponds to formula (I) (i), it is brought in the presence of an inert support in mass amount QM, expressed in weight % relative to the total mass (a) of monosilanes and/or acyclic siloxanes or (b) of the initial siloxane compounds, which is not more than 1.5. The invention also concerns a catalyst for use in the preparation of POS by said process (a) or (b) consisting of at least a compound selected among the compound of formula I(ii), the compound of formula I(iii) and mixtures thereof.
IPC 1-7
IPC 8 full level
C08G 77/08 (2006.01)
CPC (source: EP KR US)
C08G 77/08 (2013.01 - EP KR US)
Citation (search report)
See references of WO 0144349A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0144349 A1 20010621; AU 2185601 A 20010625; BR 0016767 A 20021210; CA 2394266 A1 20010621; CN 1414991 A 20030430; EP 1250379 A1 20021023; FR 2802540 A1 20010622; FR 2802540 B1 20020524; IL 150211 A0 20021201; JP 2003517072 A 20030520; KR 20020063235 A 20020801; MX PA02005915 A 20030227; PL 355873 A1 20040531; RU 2002119012 A 20040110; US 2003109659 A1 20030612; US 6737495 B2 20040518
DOCDB simple family (application)
FR 0003518 W 20001214; AU 2185601 A 20001214; BR 0016767 A 20001214; CA 2394266 A 20001214; CN 00818121 A 20001214; EP 00985435 A 20001214; FR 9916012 A 19991217; IL 15021100 A 20001214; JP 2001544832 A 20001214; KR 20027007758 A 20020617; MX PA02005915 A 20001214; PL 35587300 A 20001214; RU 2002119012 A 20001214; US 14971902 A 20021002